For the original 2005 release, Star Wars: Episode III – Revenge of the Sith played in U.S. theaters from May 19, 2005, until October 20, 2005, which is about five months.

For the 20th anniversary theatrical re‑release (opening April 25, 2025), theaters and fans have generally discussed it as a limited engagement of around one week, with the possibility of extensions if it sells well. In practice, how long it stays in your local theater will depend on your cinema’s schedule and ticket demand, so checking your specific theater’s listings week by week is the safest move.